Filter press



Jan. 6, 1931. P. L. DoRNER 1,788,086

FILTER PRESS Original Filed Aug. l0. 1927 3 Sheets-Sheet 1 l //Q/vf@ @07127927 -Ian- '5, 1931 P. l.. DoRNER 1,788,086 FILTER PRESS Original Filed Aug- 10, 1927 s sheets-sheet 2 v Jan. 6, 1931.

P. L. DORNER FILTERPmss original Filed Aug.- 10. 1927 :s sheets-sheet 3 f www Patented Jan. 6, 193i UNITEDJ:STATES PIERRE L. Dorman, or EvANsToN, ILLINoIs' FILTER PRESS Original application led August 10, 1927,4Seria1 No. 211,981. Divided and this application nled lay 11, 1929; Serial No. 362,409.

Myinvention relates morerparticularlyto filter presses forming elements of so-called dry. cleaning apparatus forcleaning fabrics and employing a Aliquidcleaning material, as

" 5 for `example benzine, which itis desired be cleaned of objectionable mat-ter, such as dirt, discoloring matterand Water Whichbecomes mixed with it in the dry cleaning operation, yand. whenit becomes acidin condition; the present application being a division of my pending application for United States Letters Patent Serial No. 211,981, filed rAugust 10,1927. One of my vobjects is yto provide a filter Y press the several filtering sections of which l lwherein the liquid to b'e cleansed is treated in succession, may `be separatelyv char ed with thedesiredfilteringmaterial; and ot er objects as will be manifest` from the following-{descriptionl l eferring to the accompanying drawings: Figure 1 is a planview *of so-called dryments. l f i j Figure 2 isa sectional view in elevation of theapparatus of Fig. L1, ,the section being taken at the lineI 2-2 on Fig. land viewed in the 4direction of the arrow.

. Figure 3 is a view in elevation of the washer, mixer and connections therebetween vforming portions of the apparatusof Fig. 1,

Icleaning apparatus embodying my improvethe mixer beingshown, in section, this view.

being taken a-t the irregular line 3`f3 on Fig. 1 and viewedin thedirection of the arrows. Figures 4 to 10, inclusive, are` detailed views of certain portions-of my improved ilp y `to the shaft 16 asthrough the gearing repter-'press forming-a part of the apparatus of Fig. 1;Fig. 4' being an end view of the filterpress as viewed from the right-hand side of *"40 Fig. 2; Fig. 5, a face view of one of the plurality of heads forming a portion ofthe flterpress; Fig.6,*a face view yofthe head at the other end of the press; Fig. 7, a face view .of

one of the plurality of ribbed plates constituting )arts of the filter-press; Fig. 8, a face view o one of the hollow frames forming parts ofthe filter-press; Fig. 9., an enlarged View in vertical,jlon itudinal, sectionaleley vation of a portion o the filter-press, the section being taken at the line 91 on Fig. `7 and viewed in the directionof the arrows; and

Fig. 10, an enlarged plan sectional I view through a portion of the filter-press, the sec- Cil Fig. 11,-` anenlarged, broken sectional view taken at the irregular line ll-llon F ig. 5 and viewed in the direction of thearrows.

Referring to the particular illustrated 4embodiment `of my. invention, the dry-cleanin apparatus showncomprises, generall state awasher represented generally at 11 1n which the fabricsto befcleaned are subjected to the cleaning liquid; amixer representedgenerally` at 12 in communication with the outlet e5 of'` they washer 11 throughy which the cleaning `liquid passes and in which, preliminarily,

thevsubstances to be charged into theilterpress are mixed with the liquid; a filter-press represented generally at 13 for cleaning the liquidwithdrawn from the washer and returning it kto the latter ink cleansed condition fory reuse; and a pump represented generally at14 for effecting, t-he desired circulation of the` liquid throught-he apparatus. 75

l Referringnow to the washer 11, which may be of any desirable construction, such as the general construct-ion now commonly in use, it comprises a tank portion 15 containing, a holder (not shown) or'the articles to be cleaned, such as clothes to be drycleaned, this holder dbeing mounted 0n a shaft 16 journalled in the ends of the tank 15 and rotated, vpreferably lintermittently in o site directions, by power applied to a ive ulley 17 in any suitable way and transmitted and adapted to be driven from a drive shaft 25 through'` the medium of bevel gears 26,A the A tank 22 preferably containing an air vent l00 v the tank through its top.

' of the y slotted at the baseeof said ribs as represented represented at 27 and communicating at its lower portion with a pipe 28 depending into The washer 15 and mixer 12 are preferably located in substantiall the same horizontal plane, as shown, an are in communication Awith each other through a pipe 29 which opens at one end into the bottom ofV the tank 15 and at its other end into the' bottom of the tank 22 this ipe being equippedl with a manually-contro ed shut-off valve 30.

The pump 14 ma be of any' desirable construction andmay e driven in any suitable way, its suction inlet being in communication with the pipe 28 and its outlet opening into a pipe' 31 which leads to the filterpress 13. Y Opening into the pipe 31 between the filterpress 13 and the pump 14 is a pipe 32 which is'provided betweenitsends with a manually-.controlled shut-off valve 33 and extends at its depending portion34 downwardly into the lower portion'of the tank 22 through the top of the latter. The pipe 32 between the pipe 31 and the mixer 12 communicates with a pipe 35 which is provided with a 'manually-controlled shut-o valve 36 and opens into the upper portion of the'tank 15.

The filter-press 13 is formed of a plurality of filter sections the press shown comprising three of suchfsections represented -generally at 37 38 and 39,y though the number thereof may be varied as desired, these sections-being se arated b heads 40 and 41.

through-passage extending crosswise thereof and at its diagonally-disposed corner a throughassage 46 extending transversely thereof an opening into the center of the framethrough a port 47 Each of the platemembers 43 contains at opposite faces thereof grooves 48 wholl within theV confines of the lite-'member which latter is at 49, these slots communicating'interiorly of the plate, through7;ports 50, with throughpassages 51 Vat the` corner-portion of'each plate, the diagonally opposite corner-of each plate containing a through-passage 52. The elements-formingt e lilte sections 37, 38 and 39, together with the hea 40 and 41 are rigidly clamped between end heads 53l and 54 which are supported on a pair of parallel rods 55 and 56, the head 54 abutting nuts 57 at ends of these rods and the hea 53 being forced toward the head 54 with the filter sections 37,38 and 89 and heads 40 and 41 interposed therebetween as shown, by a shaft 57 threaded in a cross-member 58 which abuts nuts 59 on the adjacent ends of the The sections 42 vand 43 are grouped to alternate with .eachother-as aboveA stated and in the relative positions illustrated, these elements resting on the rods 55 and 56 at lugs 60 and 61 thereon, to cause the openings 45 and 51 of these elementsfto register with `Veach other and also cause registrationof the op'enings 46 and 52, thereby Yforming at diagonally-opposed corners of v these grouped elements, at each filter section, continuous passages extending from one end to the other of each filter section, the passages formed by 'the openings 46 and 52 being inlet passages and the passages formedby-the openings 45 and 51being outlet passages.'

The intermediate headsy 40 and 41 which are alikefin construction are formed with lugs 40* land 41, respectively, at which they rest on the rods 55 and 56, each of these heads being formed at opposite faces. thereof with recesses 62 and 63, the recess 62 communicating with va passage 64 which opens into .a passage 65in thehead, the passage65 having a portion which registers with the passage formed vby VtheV openings 45 and 51 in the frames and plates'42 and 43, respectively, and extends A.upwardly through the top of the head, and the recess 63 communicating with a passage 66 which opens into a `passage 67 inthe adjacent face ofthe head in alignment with the passage formed by the o nings 45 and 51 in the frames 421-and p ates v43, respectively, of the one of vthe filter sections nextto it to the left in Fig. 1. Each head also contains a passage 68 which opens at one end throu h the top of the head and at its opposite en through a face of the head and in registration with the o enings 46 and v52 in the frames 42 and the p ates 43, respectively. The passages 65 and 68 of the head 40 are connected together by a pipe 69 containing a sight-glass 70 and a three-way valve 71, and

the passages 65 and 68 of the-head 41 are connected together by a pipe' 72 containing a sight-glass 73 and a'three-way yvalve 74. The pipe 31` is branched to yaiiordthe branches 75 and 76 providedwith manually controlled stop-valves 77 and 7 8, re ectively, and openin respectively, into/t e threeway valves 71 and.74,.the pipe 31 between the pump 14 and the Abranch 75 communicating ata three-way v alve 79 -Witha pipe 80 which connects'with. a throu hassage 81 in the head 53-registeringwit t epassa e formed by the openings 46 andv 52 in te frames42 and plates 43, respectively, ofthe filter-pressA section' 37. 1

yThe end head 54 contains in its inner face a recess 82 communicating, by a ort 83, with a throu h-opening 84-in this ead at one corner tereof andin registration with the passage formed by theopenings 45 and 51 of the frames 42 andv plates v43 constituting the filter-press sectionl 39, this passage 84 communicating with the pipe 21.

It will be understood from'the foregoing that the passage formed by the registering openings 46 and 52 of the frames 42 and plates l43`of the filter-press section 37 are in communication with the ipe 80 and that the outlet passage formedp of the openings 45 and 51 in these frames and plates are in communication with the passage of the head 40; that the passage formed of the openin s 46 and 52of the frames and plates o the lterress section 38 are in communication with t e passa e 68 of the head 40 and the assa el formed the openings 45 and 51 o the' rames and lp ates of this filter-press section are in communication with the passage 65 of the head 41; that lthe passage formed by the openings 46 and 52 of the filter-press section 39 are in communication with the passage 68 o f the head 41 and the passage formed by the openings 45 and 51 of the frames and plates of this section'are in communication with the passage 84 ofthe head 54 and consequently the pipe 21.' Y

It may be further'stated that thethreeyway-valves 71, 74 and' 79, are of common construction, the valve 71 being adapted to close the passage 68of the head 40 to the passage 65, through the pipe 69, or to open it to the passage 65 and close it to the pipe 75, or close the passage 68 to the passage 65 and open it to the pipe 75; thatthe valve 74 is o erable either to close the passage 68 of the ead 41, or open it, to the passage 65 of this head through the pipe 72, or close the passage 68 to the passage 65 and open it to the plpe 76; and that the valve 79 is operable to shut off the flow through the pipe 31 at this point or open it either to the pipe 80 or to the pipes 75 and 76.

It may be further stated that liquid to be filtered entering the inlet passage of any one of the three filter-press sections and formed by the openin s 46 and 52 thereof, flows throughout the engthof the section and branches ofi from this inlet into the interiors of each of the frames 42 thereof, thence assing laterally through the filtering clot s 44 and into the recessed portions of the plates adjacent thereto from which it discharges through the openings 50 into the outlet passage formed o'f the openings 45 and 51.

In the particular construction of filterress illustrated anddescribed the cleaning i uid withdrawn from the washer 11 is su jectedto a filterin action for restoring the liquid substantial y to its original condition and to this end removes its contained dirt, the substances therein which cause the liquid to be discolored, and water, and where the liquid contains acids removing the latyand preferably thev cleansing liquid, the

charcoal operatin `to absorb the material in the cleansing uid which gives to it its undesirable color. The section 39 may be used without any filter substance charged into it, but where it is desired to remove acid from the cleansing liquid this section should be charged, in the manner described of the other filter-press sections, with a basic compound, such as lime salts.

In the arran ementshown the filter-press sections may e separately chargedV with the desired materials, as for example those above described, fromthemixer 12 in which the several different materials are se arately mixed with the liquid and the va ves between the-pum 414 and the several filter 'sections manipu ated to conduct the several filtering substances referred to into the respective yfilter sections, this being possible as 'the valve connections described permit of the pumpin of the mixture of liquid and filtering su stance from the mixer 12 to any `one ofthe filter-press sections` to the exclusion of theothers thereof.

As is'well known in the art, theflowing of .the mixture `of-.liquid and filtering substance into the inlet passa of a filter'sec.-

tion, the mixture flowing into the interiors of the frames 42` and between layers of the filtering cloth 44, causes the filtering substance to be intercepted by these filtering cloths and Lresults in the formation of cakes of the filtering substances within these frames through which the li uid to be cleansed is caused to flow in t e filtering operation. f v

. It may be further vstated that by the arran ement of piping and valves as shown the was er 11 may :operated without circulation of the cleaning liquid'until the liquid ltherein becomes too dirty for use, whereupon the Vvalves 30, 79, 33 and 36 may be adjusted to rovide a continuous course from the was er 15 through the mixer 12 and um 14 back to the washer thereby causin the cl; cleaning liquid in the mixer 12 to me intermingled with the dirty cleaning liquid and in suchcondition tov be used for cleaning until the mixture of such li uids becomes too dirty for use, whereupon t e various valves are manipulated to cause the cleansing liquid to flowv from the washer 11 through the mixer 12, pump 14, and filterress sections 37, 38 and 39 in succession and t en back into valve 33 which, in the process of forming the filter cakes, is partially open which results inthe diversion lfrom the pipe 31 and into the mixer 12, of a-portion of the discharge from thepump 14, thereby reducingthepressure su plied to the filter-press sections. As the cages-form in the filter-press sections, thereby creatin certain resistance to the passage of liquid t rough the filter-press, the operator, by manipulating the valve 33, decreases the liquid fiow back to the mixer and increases the fiow and pressure to the filter-'presswith the result that cakes of the desired porosity are formed in the filter-press and the desired volumetric iiow of liquid therethrough, to render the apparatus continuous in operation, is effected. Y c a The location of the washer 11 and mixer 12 in substantially the same horizontal plane, together with the communication therebetween at their lower portions as provided by the pipe 29 the latter beingrofsuch diameter that the level of theliquid in the washer will be substantially the same as lthe level of the liq.- uid in the mixer at all times underk the operation of the pump, is of particular` advantage as thereby danger of over-owing the, washer is avoided. f l l y Whilek I have illustrated and described a particular construction embod ing my inventionI do not Wish to be un erstood as intending to limit it thereto as .the same may be variously modified and altered without de arting from the spirit of my invention.

Vhat I claim as new, and desire to secure by Letters Patent, is: v

l. A filter-press formed of filter sections, a conduit for conducting into one end of one of said sections liquid to be cleaned, a conduit for conducting from said section into the next section all of the liquid introduced into said first-named section, y a conduit leading away from said last-referred-to section, a conduit communicating with said secondnamedconduit, and controlling means whereby communication .between said sections through said second-named conduit and communication between said fourth-named conduit and said second-named conduit may be controlled.

2. A filter-press formed A of filtering sections separated by a head having a passage connecting the outlet of one of said sections withthe inlet of thefother of said sections,`a

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conduit communicating with said passage for the conducting into sald -last-referred-tosection of all of the liquid introduced into the first-referred-to section, and controllin means whereby communication between sai sections through said passage ,and Abetween said conduit and said passage may beloontrolled whereby liquid may be caused to flow through one only of said sections or all of the l1 uid caused to ow, in succession, Vthrong both thereof. i 3. A filter-press formed of filtering sections separated b a head containing a passage connecting t e outlet of one of said sections with the inlet of the other of said sections, a pipe for leading li uid to be filtered into the inlet of said first-re erred-to sections, a pipe communicatin with said passage for leading liquid to be ltered to saidpassage, and valve means adjustable to permit flow from said outlet through said passage and thence to said inlet of all of the liquid introduced into said first-referred-to section, or arrest the flow from one section to the other and open said passage to said second-named pipe for the supplyingy of liquid to said second-referred-to section to the exclusion of said first-reerred-to section.

PIERRE L. DORNER. 

